Ball-cock.



UNITED STATES PATENT orr on.

MICHAEL A. SLATTEBY AND WILLIAM IE. DOCKERY, OESAN FRANCISCO, CALIFORNIA.

BALL-coax.

Specification of Letters Patent.

Patented Feb. 19, 1918.

I Application filed March 20,1917. Serial No. 155,990.

fornia, have invented new and useful Im-- provements in Ball-Cocks, of which the following is a specification.

This invention relates to a high pressure ball cock fonuse in connection with flushing tanks, cisterns, or any other container where refilling or control of the water to maintain a predetermined level is necessary.

One of the objects of the present invention is to provide a simple, substantial, cheaply manufactured ball cock, and particularly a novel form of valve mechanism which is held in closed position by the water pressure. Another object of the invention is to provide a compound float-actuated l'ever arrangement for slowly opening and closing the valve, thereby permitting flushing of the valve seat both while opening and closing and also preventing water hammer. Another object of the invention is to providemeans for diffusing the water while entering through the valve to such an extent that the rushing and hissing sounds so often found annoying are prevented. Further objects will hereinafter appear.

The invention consists of the parts and the construction .and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which i Figure 1 is a vertical, longitudinal section through the valve.

Fig. 2 is a cross section on line 2-2 of Fig.

Referring to the drawings in detail, it will 7 be seen that the valve casing proper is made in two sections, such as indicated at 2 and 3, each section being provided with outwardly evtending perforated lugs, as at 4;, to permit the casing sections to be secured together by screws 0 or any other suitable means.

The lower end of section 2 extends through the bottom of a tank-shown at 5 and is threaded, as as 6, to permit the msertionof packing gaskets and a nut 7 the usual sliding joint8 being formed at the lower end to permit connection with a source of Wag ter supply under pressure through a pipe 9.

Extending through the upper casing-section is a cylinder chamber 10, and communicating with said chamber is a discharge passage 11, through which water is permitted to enter the tank. Formed inthe lower end of the cylinder chamber is a valve seat 12, and extending through the cylinder chamber is a rod 13, on the upper end of which is secured .a piston 14, while the lower end supports a rubber valve 15 of the Fuller bib type. Secured on the rod, above the valvel5, and held by the latter against a shoulder 13 on rod 13, is a guide member 16 which is provided with four outwardly extending arms 17, between which are formed small discharge openings 18. The outer ends of the arms contact with the inner .wall of the :(ZYllIldBrfihdIIlbBf, jthus forming-a guide forthe lower end of the rod and also insuring a positive seating of the valve 15 which is secured between the guide and a clamping nut 19.

The upper end of the piston 14 is slotted, as at 20, to permit a lever 21 to pass therethrough, while the lower end of the piston ing. Adjustably secured on the upper end of the bell-crank lever, by means of a thumb nut 27 is a horizontally disposed arm 28, on the outer end of which is secured a float 29. The float employed in the present instance is preferably small and constructed of glass to give the float more weight than usual. The object of employing a-weighted float will hereinafter be described.

In actual practice, an ordinary bottle of small size is employed which is'secured upon the arm 28 by entending it into the bottle neck and cementing it against removal, as

shown at 30. The upper valve casing is.

also provided with a refilling pipe 31 through which a part of the incoming water may escape and a set-screw 32, mounted be-' low said pipe, is providedfor the purpose of regulating the flow through the refilling pipe. This pipe may or may not be used and it is, therefore, possible to remove it entirely and plug the opening by means of the screw 32.

The valve or ball cock constructed as here shown is particularly adapted for use in connection with flushing tanks cisterns and othrcont'ainers where the refilling and control of water to maintain a certain'or predetermined level is necessary. The discharg-.

ing of the water from the tank decreases the level and, therefore, permits the float 29 to settle. This movement of the floatis transmitted'through the compound lever-arrange:

' ment here shown thereby depressing the pisv 32, is at the same time permitted to escape through the refilling pipe.

The refilling tube or pipe 31 is only used in connection withlow-down water closet tanks and is removed where high water closet tanks are employed. The small passages 18 in the guiding member 16 diffuse the water to such an extent, when entering the cylinder and escaping through the passage 1l,that the rushing and hissing sounds .so often found annoying are entirely eliminated. The guiding member, together with the cup leatherqand upper piston 14: em-

ployed, prevents chattering and vibration, while the valve is opening or closing with relation-t0 the seat and at the same time insures a positive guide for the valve under;

all conditions. The compound lever arrangement employed in the present instance is of considerable importance. It permits the valve to slowly open and close, thereby preventing water-hammer and it also permits the valve to be readily opened even though considerable pressure is exerted against the valve. The float 29 employed should, therefore, have considerable weight as it materially assists the compound lever to open the valve, particularly, where high pressure water systems are employed. The whole pressure exerted. against the valve when it is closed naturally necessitates a comparatively powerfullever movement to eflect 1ts opening. Leakage through the valve and a mana e the valve is not only held against'its seat by the float action but also by pressure exerted thereon. i

A float employed as here shown might break while the valve is in the closed or opened position without creating any danger perfect seating are insured at all times as '65 of overflowing. For instance, if thefloat should break against the bottom of the tank it can readily be seen that the high pressure of the inrushing water would immediately drive the valve against its seat, thus preventing refilling of the tank and at the same time giving awarning that the float has become detached orjbroken.

a .The formation of two separate casihgsec tions, secured together by the screws 5, perm1ts the insertion .of a gasket between the casing sections and also permits the upper casing section supporting the float, compound levers and valve to be removed withfore it has been common practice tomake the casing in one section and-to thread the lower end of the casing to permit the valve to be screwed into the tank. This always necessitates the removal .of the float and actuating levers as the tanks are so narrow that it is impossible to turnsame: while screwing inthe valve. This involves considerablemore-time and work as it is notv only necessary to removethelevers and float before the valve is inserted but it is also nec essary to, replace the same after the valve has been inserted. This is a complicated and tedious job as the tanks are so narrow and out disconnecting any of the parts. Heretodeep, thereby rendering it difficult to insert the pivot pins supporting the levers.

All these objections have been overcome in the presentstructure as the removal of the,

screws 5 permits the upper easing section to be lifted bodily without turning or discom necti'ng. any of the connected parts.

The materials and finish of the several parts of the device are such as the experience and judgment. of the manufacturer may dictate. i v

We wish it understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claims and thatwe do sign and construction here shown.

Having thus described our invention, what we claim and desire to secure by Letters Patent is .Aball cock including a casing having an inlet and anfoutlet, a piston in the casing, a rod depending from the piston and having a not wish to limit ourselves to the specific deshoulder, a guide member formed independent of the rod and being apertured to receive the rod and abutting said shoulder at one end of the member, said guide member having water difiusing passages, means to operate the rod, a valve epertured to receive the rod and abutting the other end of said guide member, and means to hold said valve on the rod and thereby removably hold the guide member against the shoulder, said valve being formed of rubber so as to resili ently hold the guide member on the rod.

In testimony whereof We have hereunto MICHAEL A. SLATTERY. WILLIAM F. DOCKERY.

Witnesses:

SELIMA SLA'I'IERY, I HATTIE E. DOCKERY. 

